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sample system rewrite! **PLEASE READ**

Browse source 
this commit mostly rewrites the sample system.
as of now samples can be ADPCM, 8-bit, BRR or 16-bit
or something...

consider this VERY EXPERIMENTAL.
if you find any issues REPORT THEM immediately.

it's nearly 4am...
This commit is contained in:
tildearrow 2022-02-24 03:57:45 -05:00
parent 3542229448
commit 1e98f0c4a1
19 changed files with 545 additions and 390 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
.gitmodules vendored
View file

@ -16,3 +16,6 @@
[submodule "extern/fmt"]
path = extern/fmt
url = https://github.com/fmtlib/fmt.git
[submodule "extern/adpcm"]
path = extern/adpcm
url = https://github.com/superctr/adpcm

6
CMakeLists.txt
View file

@ -236,6 +236,12 @@ extern/SAASound/src/SAANoise.cpp
extern/SAASound/src/SAASndC.cpp
extern/SAASound/src/SAASound.cpp
extern/adpcm/bs_codec.c
extern/adpcm/oki_codec.c
extern/adpcm/yma_codec.c
extern/adpcm/ymb_codec.c
extern/adpcm/ymz_codec.c
extern/Nuked-OPN2/ym3438.c
extern/opm/opm.c
src/engine/platform/sound/sn76496.cpp

1
extern/adpcm vendored Submodule

@ -0,0 +1 @@
Subproject commit ef7a217154badc3b99978ac481b268c8aab67bd8

18
papers/format.md
View file

@ -429,14 +429,26 @@ size | description
STR | sample name
4 | length
4 | rate
2 | volume
2 | pitch
2 | volume (<58) or reserved
2 | pitch (<58) or reserved
1 | depth
| - 0: ZX Spectrum overlay drum (1-bit)
| - 1: 1-bit NES DPCM (1-bit)
| - 4: QSound ADPCM
| - 5: ADPCM-A
| - 6: ADPCM-B
| - 7: X68000 ADPCM
| - 8: 8-bit PCM
| - 9: BRR (SNES)
| - 10: VOX
| - 16: 16-bit PCM
1 | reserved
2 | C-4 rate (>=32) or reserved
4 | loop point (>=19) or reserved
| - -1 means no loop
2?? | sample data (always 16-bit)
??? | sample data
| - version<58 size is length*2
| - version>=58 size is length
# pattern

153
src/engine/engine.cpp
View file

@ -434,26 +434,6 @@ void DivEngine::notifyWaveChange(int wave) {
isBusy.unlock();
}
// ADPCM code attribution: https://wiki.neogeodev.org/index.php?title=ADPCM_codecs
static short adSteps[49]={
16, 17, 19, 21, 23, 25, 28, 31, 34, 37,
41, 45, 50, 55, 60, 66, 73, 80, 88, 97,
107, 118, 130, 143, 157, 173, 190, 209, 230, 253,
279, 307, 337, 371, 408, 449, 494, 544, 598, 658,
724, 796, 876, 963, 1060, 1166, 1282, 1411, 1552
};
static int adStepSeek[16]={
-1, -1, -1, -1, 2, 5, 7, 9, -1, -1, -1, -1, 2, 5, 7, 9
};
static double samplePitches[11]={
0.1666666666, 0.2, 0.25, 0.333333333, 0.5,
1,
2, 3, 4, 5, 6
};
void DivEngine::renderSamplesP() {
isBusy.lock();
renderSamples();
@ -463,117 +443,12 @@ void DivEngine::renderSamplesP() {
void DivEngine::renderSamples() {
sPreview.sample=-1;
sPreview.pos=0;
if (jediTable==NULL) {
jediTable=new int[16*49];
for (int step=0; step<49; step++) {
for (int nib=0; nib<16; nib++) {
int value=(2*(nib&0x07)+1)*adSteps[step]/8;
jediTable[step*16+nib]=((nib&0x08)!=0)?-value:value;
}
}
}
for (int i=0; i<song.sampleLen; i++) {
DivSample* s=song.sample[i];
if (s->rendLength!=0) {
delete[] s->rendData;
delete[] s->adpcmRendData;
}
s->rendLength=(double)s->length/samplePitches[s->pitch];
if (s->rendLength==0) {
s->adpcmRendLength=0;
continue;
}
s->rendData=new short[s->rendLength];
size_t adpcmLen=((s->rendLength>>1)+255)&0xffffff00;
if (adpcmLen>1048576) adpcmLen=1048576;
s->adpcmRendLength=adpcmLen;
s->adpcmRendData=new unsigned char[adpcmLen];
memset(s->adpcmRendData,0,adpcmLen);
// step 1: render to PCM
unsigned int k=0;
float mult=(float)(s->vol)/50.0f;
for (double j=0; j<s->length; j+=samplePitches[s->pitch]) {
if (k>=s->rendLength) {
break;
}
if (s->depth==8) {
float next=(float)(s->data[(unsigned int)j]-0x80)*mult;
s->rendData[k++]=fmin(fmax(next,-128),127);
} else {
float next=(float)s->data[(unsigned int)j]*mult;
s->rendData[k++]=fmin(fmax(next,-32768),32767);
}
}
// step 2: render to ADPCM
int acc=0;
int decstep=0;
int diff=0;
int step=0;
int predsample=0;
int index=0;
int prevsample=0;
int previndex=0;
for (unsigned int j=0; j<s->adpcmRendLength*2; j++) {
unsigned char encoded=0;
int tempstep=0;
predsample=prevsample;
index=previndex;
step=adSteps[index];
short sample=(j<s->rendLength)?((s->depth==16)?(s->rendData[j]>>4):(s->rendData[j]<<4)):0;
if (sample>0x7d0) sample=0x7d0;
if (sample<-0x7d0) sample=-0x7d0;
diff=sample-predsample;
if (diff>=0) {
encoded=0;
} else {
encoded=8;
diff=-diff;
}
tempstep=step;
if (diff>=tempstep) {
encoded|=4;
diff-=tempstep;
}
tempstep>>=1;
if (diff>=tempstep) {
encoded|=2;
diff-=tempstep;
}
tempstep>>=1;
if (diff>=tempstep) encoded|=1;
acc+=jediTable[decstep+encoded];
/*if (acc>0x7ff || acc<-0x800) {
logW("clipping! %d\n",acc);
}*/
acc&=0xfff;
if (acc&0x800) acc|=~0xfff;
decstep+=adStepSeek[encoded&7]*16;
if (decstep<0) decstep=0;
if (decstep>48*16) decstep=48*16;
predsample=(short)acc;
index+=adStepSeek[encoded];
if (index<0) index=0;
if (index>48) index=48;
prevsample=predsample;
previndex=index;
if (j&1) {
s->adpcmRendData[j>>1]|=encoded;
} else {
s->adpcmRendData[j>>1]=encoded<<4;
}
}
song.sample[i]->render();
}
/*
// step 3: allocate ADPCM samples
if (adpcmMem==NULL) adpcmMem=new unsigned char[16777216];
@ -631,6 +506,7 @@ void DivEngine::renderSamples() {
memPos+=length+16;
}
qsoundMemLen=memPos+256;
*/
}
void DivEngine::createNew() {
@ -1901,22 +1777,23 @@ bool DivEngine::addSampleFromFile(const char* path) {
sample->name=sName;
int index=0;
sample->length=si.frames;
sample->data=new short[si.frames];
sample->depth=16;
sample->vol=50;
sample->pitch=5;
if ((si.format&SF_FORMAT_SUBMASK)==SF_FORMAT_PCM_U8) {
sample->depth=8;
} else {
sample->depth=16;
}
sample->init(si.frames);
for (int i=0; i<si.frames*si.channels; i+=si.channels) {
int averaged=0;
for (int j=0; j<si.channels; j++) {
if (((si.format&SF_FORMAT_SUBMASK)==SF_FORMAT_PCM_U8)) {
averaged+=buf[i+j];
} else {
averaged+=buf[i+j];
}
averaged+=buf[i+j];
}
averaged/=si.channels;
sample->data[index++]=averaged;
if (((si.format&SF_FORMAT_SUBMASK)==SF_FORMAT_PCM_U8)) {
sample->data8[index++]=averaged;
} else {
sample->data16[index++]=averaged;
}
}
delete[] buf;
sample->rate=si.samplerate;

7
src/engine/engine.h
View file

@ -37,8 +37,8 @@
warnings+=(String("\n")+x); \
}
#define DIV_VERSION "dev57"
#define DIV_ENGINE_VERSION 57
#define DIV_VERSION "dev58"
#define DIV_ENGINE_VERSION 58
enum DivStatusView {
DIV_STATUS_NOTHING=0,
@ -223,8 +223,6 @@ class DivEngine {
size_t totalProcessed;
private: int* jediTable;
DivSystem systemFromFile(unsigned char val);
unsigned char systemToFile(DivSystem val);
int dispatchCmd(DivCommand c);
@ -680,7 +678,6 @@ class DivEngine {
metroPos(0),
metroAmp(0.0f),
totalProcessed(0),
jediTable(NULL),
oscBuf{NULL,NULL},
oscSize(1),
adpcmMem(NULL),

140
src/engine/fileOps.cpp
View file

@ -42,6 +42,12 @@ struct InflateBlock {
}
};
static double samplePitches[11]={
0.1666666666, 0.2, 0.25, 0.333333333, 0.5,
1,
2, 3, 4, 5, 6
};
bool DivEngine::loadDMF(unsigned char* file, size_t len) {
SafeReader reader=SafeReader(file,len);
warnings="";
@ -607,9 +613,12 @@ bool DivEngine::loadDMF(unsigned char* file, size_t len) {
}
for (int i=0; i<ds.sampleLen; i++) {
DivSample* sample=new DivSample;
sample->length=reader.readI();
if (sample->length<0) {
logE("invalid sample length %d. are we doing something wrong?\n",sample->length);
int length=reader.readI();
int pitch=5;
int vol=50;
short* data;
if (length<0) {
logE("invalid sample length %d. are we doing something wrong?\n",length);
lastError="file is corrupt or unreadable at samples";
delete[] file;
return false;
@ -619,31 +628,57 @@ bool DivEngine::loadDMF(unsigned char* file, size_t len) {
} else {
sample->name="";
}
logD("%d name %s (%d)\n",i,sample->name.c_str(),sample->length);
if (ds.version<0x0b) {
sample->rate=22050;
sample->pitch=5;
sample->vol=50;
} else {
logD("%d name %s (%d)\n",i,sample->name.c_str(),length);
sample->rate=22050;
if (ds.version>=0x0b) {
sample->rate=fileToDivRate(reader.readC());
sample->pitch=reader.readC();
sample->vol=reader.readC();
pitch=reader.readC();
vol=reader.readC();
}
logI("pitch and vol: %d %d\n",sample->pitch,sample->vol);
if (ds.version>0x15) {
sample->depth=reader.readC();
if (sample->depth!=8 && sample->depth!=16) {
logW("%d: sample depth is wrong! (%d)\n",i,sample->depth);
sample->depth=16;
}
} else {
sample->depth=16;
}
if (sample->length>0) {
if (length>0) {
if (ds.version<0x0b) {
sample->data=new short[1+(sample->length/2)];
reader.read(sample->data,sample->length);
sample->length/=2;
data=new short[1+(length/2)];
reader.read(data,length);
length/=2;
} else {
sample->data=new short[sample->length];
reader.read(sample->data,sample->length*2);
data=new short[length];
reader.read(data,length*2);
}
if (pitch!=5) {
logD("%d: scaling from %d...\n",i,pitch);
}
// render data
if (!sample->init((double)length/samplePitches[pitch])) {
logE("%d: error while initializing sample!\n",i);
}
unsigned int k=0;
float mult=(float)(vol)/50.0f;
for (double j=0; j<length; j+=samplePitches[pitch]) {
if (k>=sample->samples) {
break;
}
if (sample->depth==8) {
float next=(float)(data[(unsigned int)j]-0x80)*mult;
sample->data8[k++]=fmin(fmax(next,-128),127);
} else {
float next=(float)data[(unsigned int)j]*mult;
sample->data16[k++]=fmin(fmax(next,-32768),32767);
}
}
delete[] data;
}
ds.sample.push_back(sample);
}
@ -996,6 +1031,9 @@ bool DivEngine::loadFur(unsigned char* file, size_t len) {
// read samples
for (int i=0; i<ds.sampleLen; i++) {
int vol=0;
int pitch=0;
reader.seek(samplePtr[i],SEEK_SET);
reader.read(magic,4);
if (strcmp(magic,"SMPL")!=0) {
@ -1008,10 +1046,14 @@ bool DivEngine::loadFur(unsigned char* file, size_t len) {
DivSample* sample=new DivSample;
sample->name=reader.readString();
sample->length=reader.readI();
sample->samples=reader.readI();
sample->rate=reader.readI();
sample->vol=reader.readS();
sample->pitch=reader.readS();
if (ds.version<58) {
vol=reader.readS();
pitch=reader.readS();
} else {
reader.readI();
}
sample->depth=reader.readC();
// reserved
@ -1030,8 +1072,42 @@ bool DivEngine::loadFur(unsigned char* file, size_t len) {
reader.readI();
}
sample->data=new short[sample->length];
reader.read(sample->data,2*sample->length);
if (ds.version>=58) { // modern sample
sample->init(sample->samples);
reader.read(sample->getCurBuf(),sample->getCurBufLen());
} else { // legacy sample
int length=sample->samples;
short* data=new short[length];
reader.read(data,2*length);
if (pitch!=5) {
logD("%d: scaling from %d...\n",i,pitch);
}
// render data
if (sample->depth!=8 && sample->depth!=16) {
logW("%d: sample depth is wrong! (%d)\n",i,sample->depth);
sample->depth=16;
}
sample->init(sample->samples);
unsigned int k=0;
float mult=(float)(vol)/50.0f;
for (double j=0; j<length; j+=samplePitches[pitch]) {
if (k>=sample->samples) {
break;
}
if (sample->depth==8) {
float next=(float)(data[(unsigned int)j]-0x80)*mult;
sample->data8[k++]=fmin(fmax(next,-128),127);
} else {
float next=(float)data[(unsigned int)j]*mult;
sample->data16[k++]=fmin(fmax(next,-32768),32767);
}
}
delete[] data;
}
ds.sample.push_back(sample);
}
@ -1390,16 +1466,15 @@ SafeWriter* DivEngine::saveFur() {
w->writeI(0);
w->writeString(sample->name,false);
w->writeI(sample->length);
w->writeI(sample->samples);
w->writeI(sample->rate);
w->writeS(sample->vol);
w->writeS(sample->pitch);
w->writeI(0); // reserved (for now)
w->writeC(sample->depth);
w->writeC(0);
w->writeS(sample->centerRate);
w->writeI(sample->loopStart);
w->write(sample->data,sample->length*2);
w->write(sample->getCurBuf(),sample->getCurBufLen());
}
/// PATTERN
@ -1728,13 +1803,14 @@ SafeWriter* DivEngine::saveDMF(unsigned char version) {
w->writeC(song.sample.size());
for (DivSample* i: song.sample) {
w->writeI(i->length);
w->writeI(i->samples);
w->writeString(i->name,true);
w->writeC(divToFileRate(i->rate));
w->writeC(i->pitch);
w->writeC(i->vol);
w->writeC(i->depth);
w->write(i->data,2*i->length);
w->writeC(5);
w->writeC(50);
// i'm too lazy to deal with .dmf's weird way of storing 8-bit samples
w->writeC(16);
w->write(i->data16,i->length16);
}
return w;

12
src/engine/platform/amiga.cpp
View file

@ -72,14 +72,10 @@ void DivPlatformAmiga::acquire(short* bufL, short* bufR, size_t start, size_t le
chan[i].audSub-=AMIGA_DIVIDER;
if (chan[i].audSub<0) {
DivSample* s=parent->song.sample[chan[i].sample];
if (s->rendLength>0) {
if (s->depth==8) {
chan[i].audDat=s->rendData[chan[i].audPos++];
} else {
chan[i].audDat=s->rendData[chan[i].audPos++]>>8;
}
if (chan[i].audPos>=s->rendLength || chan[i].audPos>=131071) {
if (s->loopStart>=0 && s->loopStart<=(int)s->rendLength) {
if (s->samples>0) {
chan[i].audDat=s->data8[chan[i].audPos++];
if (chan[i].audPos>=s->samples || chan[i].audPos>=131071) {
if (s->loopStart>=0 && s->loopStart<=(int)s->samples) {
chan[i].audPos=s->loopStart;
} else {
chan[i].sample=-1;

24
src/engine/platform/genesis.cpp
View file

@ -90,16 +90,12 @@ void DivPlatformGenesis::acquire_nuked(short* bufL, short* bufR, size_t start, s
dacPeriod-=6;
if (dacPeriod<1) {
DivSample* s=parent->song.sample[dacSample];
if (s->rendLength>0) {
if (s->samples>0) {
if (!isMuted[5]) {
if (s->depth==8) {
immWrite(0x2a,(unsigned char)s->rendData[dacPos]+0x80);
} else {
immWrite(0x2a,((unsigned short)s->rendData[dacPos]+0x8000)>>8);
}
immWrite(0x2a,(unsigned char)s->data8[dacPos]+0x80);
}
if (++dacPos>=s->rendLength) {
if (s->loopStart>=0 && s->loopStart<=(int)s->rendLength) {
if (++dacPos>=s->samples) {
if (s->loopStart>=0 && s->loopStart<=(int)s->samples) {
dacPos=s->loopStart;
} else {
dacSample=-1;
@ -164,16 +160,12 @@ void DivPlatformGenesis::acquire_ymfm(short* bufL, short* bufR, size_t start, si
dacPeriod-=24;
if (dacPeriod<1) {
DivSample* s=parent->song.sample[dacSample];
if (s->rendLength>0) {
if (s->samples>0) {
if (!isMuted[5]) {
if (s->depth==8) {
immWrite(0x2a,(unsigned char)s->rendData[dacPos]+0x80);
} else {
immWrite(0x2a,((unsigned short)s->rendData[dacPos]+0x8000)>>8);
}
immWrite(0x2a,(unsigned char)s->data8[dacPos]+0x80);
}
if (++dacPos>=s->rendLength) {
if (s->loopStart>=0 && s->loopStart<=(int)s->rendLength) {
if (++dacPos>=s->samples) {
if (s->loopStart>=0 && s->loopStart<=(int)s->samples) {
dacPos=s->loopStart;
} else {
dacSample=-1;

12
src/engine/platform/nes.cpp
View file

@ -76,16 +76,12 @@ void DivPlatformNES::acquire(short* bufL, short* bufR, size_t start, size_t len)
dacPeriod+=dacRate;
if (dacPeriod>=rate) {
DivSample* s=parent->song.sample[dacSample];
if (s->rendLength>0) {
if (s->samples>0) {
if (!isMuted[4]) {
if (s->depth==8) {
rWrite(0x4011,((unsigned char)s->rendData[dacPos]+0x80)>>1);
} else {
rWrite(0x4011,((unsigned short)s->rendData[dacPos]+0x8000)>>9);
}
rWrite(0x4011,((unsigned char)s->data8[dacPos]+0x80)>>1);
}
if (++dacPos>=s->rendLength) {
if (s->loopStart>=0 && s->loopStart<=(int)s->rendLength) {
if (++dacPos>=s->samples) {
if (s->loopStart>=0 && s->loopStart<=(int)s->samples) {
dacPos=s->loopStart;
} else {
dacSample=-1;

15
src/engine/platform/pce.cpp
View file

@ -82,21 +82,16 @@ void DivPlatformPCE::acquire(short* bufL, short* bufR, size_t start, size_t len)
chan[i].dacPeriod+=chan[i].dacRate;
if (chan[i].dacPeriod>rate) {
DivSample* s=parent->song.sample[chan[i].dacSample];
if (s->rendLength<=0) {
if (s->samples<=0) {
chan[i].dacSample=-1;
continue;
}
chWrite(i,0x07,0);
if (s->depth==8) {
chWrite(i,0x04,0xdf);
chWrite(i,0x06,(((unsigned char)s->rendData[chan[i].dacPos]+0x80)>>3));
} else {
chWrite(i,0x04,0xdf);
chWrite(i,0x06,(((unsigned short)s->rendData[chan[i].dacPos]+0x8000)>>11));
}
chWrite(i,0x04,0xdf);
chWrite(i,0x06,(((unsigned char)s->data8[chan[i].dacPos]+0x80)>>3));
chan[i].dacPos++;
if (chan[i].dacPos>=s->rendLength) {
if (s->loopStart>=0 && s->loopStart<=(int)s->rendLength) {
if (chan[i].dacPos>=s->samples) {
if (s->loopStart>=0 && s->loopStart<=(int)s->samples) {
chan[i].dacPos=s->loopStart;
} else {
chan[i].dacSample=-1;

10
src/engine/platform/qsound.cpp
View file

@ -296,18 +296,18 @@ void DivPlatformQSound::tick() {
} else {
off=(double)s->centerRate/24038.0/16.0;
}
qsound_bank = 0x8000 | (s->rendOffQsound >> 16);
qsound_addr = s->rendOffQsound & 0xffff;
qsound_bank = 0x8000 | (s->offQSound >> 16);
qsound_addr = s->offQSound & 0xffff;
int length = s->length;
int length = s->samples;
if (length > 65536 - 16) {
length = 65536 - 16;
}
if (s->loopStart == -1 || s->loopStart >= length) {
qsound_end = s->rendOffQsound + length + 15;
qsound_end = s->offQSound + length + 15;
qsound_loop = 15;
} else {
qsound_end = s->rendOffQsound + length;
qsound_end = s->offQSound + length;
qsound_loop = length - s->loopStart;
}
}

47
src/engine/platform/segapcm.cpp
View file

@ -44,22 +44,17 @@ void DivPlatformSegaPCM::acquire(short* bufL, short* bufR, size_t start, size_t
for (int i=0; i<16; i++) {
if (chan[i].pcm.sample>=0 && chan[i].pcm.sample<parent->song.sampleLen) {
DivSample* s=parent->song.sample[chan[i].pcm.sample];
if (s->rendLength<=0) {
if (s->samples<=0) {
chan[i].pcm.sample=-1;
continue;
}
if (!isMuted[i]) {
if (s->depth==8) {
pcmL+=(s->rendData[chan[i].pcm.pos>>8]*chan[i].chVolL);
pcmR+=(s->rendData[chan[i].pcm.pos>>8]*chan[i].chVolR);
} else {
pcmL+=(s->rendData[chan[i].pcm.pos>>8]*chan[i].chVolL)>>8;
pcmR+=(s->rendData[chan[i].pcm.pos>>8]*chan[i].chVolR)>>8;
}
pcmL+=(s->data8[chan[i].pcm.pos>>8]*chan[i].chVolL);
pcmR+=(s->data8[chan[i].pcm.pos>>8]*chan[i].chVolR);
}
chan[i].pcm.pos+=chan[i].pcm.freq;
if (chan[i].pcm.pos>=(s->rendLength<<8)) {
if (s->loopStart>=0 && s->loopStart<=(int)s->rendLength) {
if (chan[i].pcm.pos>=(s->samples<<8)) {
if (s->loopStart>=0 && s->loopStart<=(int)s->samples) {
chan[i].pcm.pos=s->loopStart<<8;
} else {
chan[i].pcm.sample=-1;
@ -152,17 +147,17 @@ int DivPlatformSegaPCM::dispatch(DivCommand c) {
chan[c.chan].furnacePCM=true;
if (dumpWrites) { // Sega PCM writes
DivSample* s=parent->song.sample[chan[c.chan].pcm.sample];
addWrite(0x10086+(c.chan<<3),3+((s->rendOffP>>16)<<3));
addWrite(0x10084+(c.chan<<3),(s->rendOffP)&0xff);
addWrite(0x10085+(c.chan<<3),(s->rendOffP>>8)&0xff);
addWrite(0x10006+(c.chan<<3),MIN(255,((s->rendOffP&0xffff)+s->rendLength-1)>>8));
if (s->loopStart<0 || s->loopStart>=(int)s->rendLength) {
addWrite(0x10086+(c.chan<<3),2+((s->rendOffP>>16)<<3));
addWrite(0x10086+(c.chan<<3),3+((s->offSegaPCM>>16)<<3));
addWrite(0x10084+(c.chan<<3),(s->offSegaPCM)&0xff);
addWrite(0x10085+(c.chan<<3),(s->offSegaPCM>>8)&0xff);
addWrite(0x10006+(c.chan<<3),MIN(255,((s->offSegaPCM&0xffff)+s->length8-1)>>8));
if (s->loopStart<0 || s->loopStart>=(int)s->length8) {
addWrite(0x10086+(c.chan<<3),2+((s->offSegaPCM>>16)<<3));
} else {
int loopPos=(s->rendOffP&0xffff)+s->loopStart+s->loopOffP;
int loopPos=(s->offSegaPCM&0xffff)+s->loopStart+s->loopOffP;
addWrite(0x10004+(c.chan<<3),loopPos&0xff);
addWrite(0x10005+(c.chan<<3),(loopPos>>8)&0xff);
addWrite(0x10086+(c.chan<<3),((s->rendOffP>>16)<<3));
addWrite(0x10086+(c.chan<<3),((s->offSegaPCM>>16)<<3));
}
}
} else {
@ -182,17 +177,17 @@ int DivPlatformSegaPCM::dispatch(DivCommand c) {
chan[c.chan].furnacePCM=false;
if (dumpWrites) { // Sega PCM writes
DivSample* s=parent->song.sample[chan[c.chan].pcm.sample];
addWrite(0x10086+(c.chan<<3),3+((s->rendOffP>>16)<<3));
addWrite(0x10084+(c.chan<<3),(s->rendOffP)&0xff);
addWrite(0x10085+(c.chan<<3),(s->rendOffP>>8)&0xff);
addWrite(0x10006+(c.chan<<3),MIN(255,((s->rendOffP&0xffff)+s->rendLength-1)>>8));
if (s->loopStart<0 || s->loopStart>=(int)s->rendLength) {
addWrite(0x10086+(c.chan<<3),2+((s->rendOffP>>16)<<3));
addWrite(0x10086+(c.chan<<3),3+((s->offSegaPCM>>16)<<3));
addWrite(0x10084+(c.chan<<3),(s->offSegaPCM)&0xff);
addWrite(0x10085+(c.chan<<3),(s->offSegaPCM>>8)&0xff);
addWrite(0x10006+(c.chan<<3),MIN(255,((s->offSegaPCM&0xffff)+s->length8-1)>>8));
if (s->loopStart<0 || s->loopStart>=(int)s->length8) {
addWrite(0x10086+(c.chan<<3),2+((s->offSegaPCM>>16)<<3));
} else {
int loopPos=(s->rendOffP&0xffff)+s->loopStart+s->loopOffP;
int loopPos=(s->offSegaPCM&0xffff)+s->loopStart+s->loopOffP;
addWrite(0x10004+(c.chan<<3),loopPos&0xff);
addWrite(0x10005+(c.chan<<3),(loopPos>>8)&0xff);
addWrite(0x10086+(c.chan<<3),((s->rendOffP>>16)<<3));
addWrite(0x10086+(c.chan<<3),((s->offSegaPCM>>16)<<3));
}
addWrite(0x10007+(c.chan<<3),chan[c.chan].pcm.freq);
}

6
src/engine/platform/ym2610.cpp
View file

@ -437,9 +437,9 @@ int DivPlatformYM2610::dispatch(DivCommand c) {
break;
}
DivSample* s=parent->song.sample[12*sampleBank+c.value%12];
immWrite(0x110+c.chan-7,(s->rendOff>>8)&0xff);
immWrite(0x118+c.chan-7,s->rendOff>>16);
int end=s->rendOff+s->adpcmRendLength-1;
immWrite(0x110+c.chan-7,(s->offA>>8)&0xff);
immWrite(0x118+c.chan-7,s->offA>>16);
int end=s->offA+s->lengthA-1;
immWrite(0x120+c.chan-7,(end>>8)&0xff);
immWrite(0x128+c.chan-7,end>>16);
immWrite(0x108+(c.chan-7),isMuted[c.chan]?0:((chan[c.chan].pan<<6)|chan[c.chan].vol));

12
src/engine/playback.cpp
View file

@ -1132,24 +1132,24 @@ void DivEngine::nextBuf(float** in, float** out, int inChans, int outChans, unsi
DivSample* s=song.sample[sPreview.sample];
for (size_t i=0; i<prevtotal; i++) {
if (sPreview.pos>=s->rendLength) {
if (sPreview.pos>=s->samples) {
samp_temp=0;
} else {
samp_temp=s->rendData[sPreview.pos++];
samp_temp=s->data16[sPreview.pos++];
}
if (s->depth==8) samp_temp<<=8;
blip_add_delta(samp_bb,i,samp_temp-samp_prevSample);
samp_prevSample=samp_temp;
if (sPreview.pos>=s->rendLength) {
if (s->loopStart>=0 && s->loopStart<(int)s->rendLength) {
if (sPreview.pos>=s->samples) {
if (s->loopStart>=0 && s->loopStart<(int)s->samples) {
sPreview.pos=s->loopStart;
}
}
}
if (sPreview.pos>=s->rendLength) {
if (s->loopStart>=0 && s->loopStart<(int)s->rendLength) {
if (sPreview.pos>=s->samples) {
if (s->loopStart>=0 && s->loopStart<(int)s->samples) {
sPreview.pos=s->loopStart;
} else {
sPreview.sample=-1;

271
src/engine/sample.cpp
View file

@ -23,20 +23,24 @@
#include <sndfile.h>
#include <math.h>
extern "C" {
#include "../../extern/adpcm/bs_codec.h"
#include "../../extern/adpcm/oki_codec.h"
#include "../../extern/adpcm/yma_codec.h"
#include "../../extern/adpcm/ymb_codec.h"
#include "../../extern/adpcm/ymz_codec.h"
}
bool DivSample::save(const char* path) {
SNDFILE* f;
SF_INFO si;
memset(&si,0,sizeof(SF_INFO));
if (length<1) return false;
if (length16<1) return false;
si.channels=1;
si.samplerate=rate;
if (depth==16) {
si.format=SF_FORMAT_PCM_16|SF_FORMAT_WAV;
} else {
si.format=SF_FORMAT_PCM_U8|SF_FORMAT_WAV;
}
si.format=SF_FORMAT_PCM_16|SF_FORMAT_WAV;
f=sf_open(path,SFM_WRITE,&si);
@ -58,28 +62,253 @@ bool DivSample::save(const char* path) {
inst.loop_count = 1;
inst.loops[0].mode = SF_LOOP_FORWARD;
inst.loops[0].start = loopStart;
inst.loops[0].end = length;
inst.loops[0].end = samples;
}
sf_command(f, SFC_SET_INSTRUMENT, &inst, sizeof(inst));
if (depth==16) {
sf_writef_short(f,data,length);
} else {
short* cbuf=new short[length];
for (int i=0; i<length; i++) {
cbuf[i]=(data[i]<<8)^0x8000;
}
sf_writef_short(f,cbuf,length);
delete[] cbuf;
}
sf_write_short(f,data16,length16);
sf_close(f);
return true;
}
DivSample::~DivSample() {
if (data) delete[] data;
if (rendData) delete[] rendData;
if (adpcmRendData) delete[] adpcmRendData;
bool DivSample::initInternal(unsigned char d, int count) {
switch (d) {
case 0: // 1-bit
if (data1!=NULL) delete[] data1;
length1=(count+7)/8;
data1=new unsigned char[length1];
memset(data1,0,length1);
break;
case 1: // DPCM
if (dataDPCM!=NULL) delete[] dataDPCM;
lengthDPCM=(count+7)/8;
dataDPCM=new unsigned char[lengthDPCM];
memset(dataDPCM,0,lengthDPCM);
break;
case 4: // QSound ADPCM
if (dataQSoundA!=NULL) delete[] dataQSoundA;
lengthQSoundA=(count+1)/2;
dataQSoundA=new unsigned char[lengthQSoundA];
memset(dataQSoundA,0,lengthQSoundA);
break;
case 5: // ADPCM-A
if (dataA!=NULL) delete[] dataA;
lengthA=(count+1)/2;
dataA=new unsigned char[lengthA];
memset(dataA,0,lengthA);
break;
case 6: // ADPCM-B
if (dataB!=NULL) delete[] dataB;
lengthB=(count+1)/2;
dataB=new unsigned char[lengthB];
memset(dataB,0,lengthB);
break;
case 7: // X68000 ADPCM
if (dataX68!=NULL) delete[] dataX68;
lengthX68=(count+1)/2;
dataX68=new unsigned char[lengthX68];
memset(dataX68,0,lengthX68);
break;
case 8: // 8-bit
if (data8!=NULL) delete[] data8;
length8=count;
data8=new signed char[length8];
memset(data8,0,length8);
break;
case 9: // BRR
if (dataBRR!=NULL) delete[] dataBRR;
lengthBRR=9*((count+15)/16);
dataBRR=new unsigned char[lengthBRR];
memset(dataBRR,0,lengthBRR);
break;
case 10: // VOX
if (dataVOX!=NULL) delete[] dataVOX;
lengthVOX=(count+1)/2;
dataVOX=new unsigned char[lengthVOX];
memset(dataVOX,0,lengthVOX);
break;
case 16: // 16-bit
if (data16!=NULL) delete[] data16;
length16=count*2;
data16=new short[count];
memset(data16,0,count*sizeof(short));
break;
default:
return false;
}
return true;
}
bool DivSample::init(unsigned int count) {
if (!initInternal(depth,count)) return false;
samples=count;
return true;
}
void DivSample::render() {
// step 1: convert to 16-bit if needed
if (depth!=16) {
if (!initInternal(16,samples)) return;
switch (depth) {
case 0: // 1-bit
for (unsigned int i=0; i<samples; i++) {
data16[i]=((data1[i>>3]>>(i&7))&1)?0x7fff:-0x7fff;
}
break;
case 1: { // DPCM
int accum=0;
for (unsigned int i=0; i<samples; i++) {
accum+=((data1[i>>3]>>(i&7))&1)?1:-1;
if (accum>63) accum=63;
if (accum<-64) accum=-64;
data16[i]=accum*512;
}
break;
}
case 4: // QSound ADPCM
bs_decode(dataQSoundA,data16,samples);
break;
case 5: // ADPCM-A
yma_decode(dataA,data16,samples);
break;
case 6: // ADPCM-B
ymb_decode(dataB,data16,samples);
break;
case 7: // X6800 ADPCM
oki6258_decode(dataX68,data16,samples);
break;
case 8: // 8-bit PCM
for (unsigned int i=0; i<samples; i++) {
data16[i]=data8[i]<<8;
}
break;
case 9: // BRR
// TODO!
break;
case 10: // VOX
oki_decode(dataVOX,data16,samples);
break;
default:
return;
}
}
// step 2: render to other formats
if (depth!=0) { // 1-bit
if (!initInternal(0,samples)) return;
for (unsigned int i=0; i<samples; i++) {
if (data16[i]>0) {
data1[i>>3]|=1<<(i&7);
}
}
}
if (depth!=1) { // DPCM
if (!initInternal(1,samples)) return;
int accum=63;
for (unsigned int i=0; i<samples; i++) {
int next=((unsigned short)(data16[i]^0x8000))>>9;
if (next>accum) {
dataDPCM[i>>3]|=1<<(i&7);
accum++;
} else {
accum--;
}
if (accum<0) accum=0;
if (accum>127) accum=127;
}
}
if (depth!=4) { // QSound ADPCM
if (!initInternal(4,samples)) return;
bs_encode(data16,dataQSoundA,samples);
}
if (depth!=5) { // ADPCM-A
if (!initInternal(5,samples)) return;
yma_encode(data16,dataA,samples);
}
if (depth!=6) { // ADPCM-B
if (!initInternal(6,samples)) return;
ymb_encode(data16,dataB,samples);
}
if (depth!=7) { // X68000 ADPCM
if (!initInternal(7,samples)) return;
oki6258_encode(data16,dataX68,samples);
}
if (depth!=8) { // 8-bit PCM
if (!initInternal(8,samples)) return;
for (unsigned int i=0; i<samples; i++) {
data8[i]=data16[i]>>8;
}
}
// TODO: BRR!
if (depth!=10) { // VOX
if (!initInternal(10,samples)) return;
oki_encode(data16,dataVOX,samples);
}
}
void* DivSample::getCurBuf() {
switch (depth) {
case 0:
return data1;
case 1:
return dataDPCM;
case 4:
return dataQSoundA;
case 5:
return dataA;
case 6:
return dataB;
case 7:
return dataX68;
case 8:
return data8;
case 9:
return dataBRR;
case 10:
return dataVOX;
case 16:
return data16;
}
return NULL;
}
unsigned int DivSample::getCurBufLen() {
switch (depth) {
case 0:
return length1;
case 1:
return lengthDPCM;
case 4:
return lengthQSoundA;
case 5:
return lengthA;
case 6:
return lengthB;
case 7:
return lengthX68;
case 8:
return length8;
case 9:
return lengthBRR;
case 10:
return lengthVOX;
case 16:
return length16;
}
return 0;
}
DivSample::~DivSample() {
if (data8) delete[] data8;
if (data16) delete[] data16;
if (data1) delete[] data1;
if (dataDPCM) delete[] dataDPCM;
if (dataQSoundA) delete[] dataQSoundA;
if (dataA) delete[] dataA;
if (dataB) delete[] dataB;
if (dataX68) delete[] dataX68;
if (dataBRR) delete[] dataBRR;
if (dataVOX) delete[] dataVOX;
}

85
src/engine/sample.h
View file

@ -21,12 +21,11 @@
struct DivSample {
String name;
int length, rate, centerRate, loopStart, loopOffP;
signed char vol, pitch;
int rate, centerRate, loopStart, loopOffP;
// valid values are:
// - 0: ZX Spectrum overlay drum (1-bit)
// - 1: 1-bit NES DPCM (1-bit)
// - 4: QSound ADPCM ()
// - 4: QSound ADPCM
// - 5: ADPCM-A
// - 6: ADPCM-B
// - 7: X68000 ADPCM
@ -36,45 +35,69 @@ struct DivSample {
// - 16: 16-bit PCM
unsigned char depth;
// TODO: drop
short* data;
// these are the new data structures.
signed char* data8;
short* data16;
unsigned char* data1;
unsigned char* dataDPCM;
unsigned char* dataQSound;
unsigned char* dataA;
unsigned char* dataB;
unsigned char* dataX68;
unsigned char* dataBRR;
unsigned char* dataVOX;
signed char* data8; // 8
short* data16; // 16
unsigned char* data1; // 0
unsigned char* dataDPCM; // 1
unsigned char* dataQSoundA; // 4
unsigned char* dataA; // 5
unsigned char* dataB; // 6
unsigned char* dataX68; // 7
unsigned char* dataBRR; // 9
unsigned char* dataVOX; // 10
unsigned int length8, length16, length1, lengthDPCM, lengthQSoundA, lengthA, lengthB, lengthX68, lengthBRR, lengthVOX;
unsigned int off8, off16, off1, offDPCM, offQSoundA, offA, offB, offX68, offBRR, offVOX;
unsigned int offSegaPCM, offQSound;
unsigned int rendLength, adpcmRendLength, rendOff, rendOffP, rendOffContiguous, rendOffQsound;
short* rendData;
unsigned char* adpcmRendData;
unsigned int samples;
bool save(const char* path);
bool initInternal(unsigned char d, int count);
bool init(unsigned int count);
void render();
void* getCurBuf();
unsigned int getCurBufLen();
DivSample():
name(""),
length(0),
rate(32000),
centerRate(8363),
loopStart(-1),
loopOffP(0),
vol(0),
pitch(0),
depth(16),
data(NULL),
rendLength(0),
adpcmRendLength(0),
rendOff(0),
rendOffP(0),
rendOffContiguous(0),
rendOffQsound(0),
rendData(NULL),
adpcmRendData(NULL) {}
data8(NULL),
data16(NULL),
data1(NULL),
dataDPCM(NULL),
dataQSoundA(NULL),
dataA(NULL),
dataB(NULL),
dataX68(NULL),
dataBRR(NULL),
dataVOX(NULL),
length8(0),
length16(0),
length1(0),
lengthDPCM(0),
lengthQSoundA(0),
lengthA(0),
lengthB(0),
lengthX68(0),
lengthBRR(0),
lengthVOX(0),
off8(0),
off16(0),
off1(0),
offDPCM(0),
offQSoundA(0),
offA(0),
offB(0),
offX68(0),
offBRR(0),
offVOX(0),
offSegaPCM(0),
offQSound(0),
samples(0) {}
~DivSample();
};

94
src/engine/vgmOps.cpp
View file

@ -310,7 +310,7 @@ void DivEngine::performVGMWrite(SafeWriter* w, DivSystem sys, DivRegWrite& write
w->writeS(write.val); // sample number
w->writeC((sample->loopStart==0)); // flags
if (sample->loopStart>0) {
loopTimer[streamID]=sample->rendLength;
loopTimer[streamID]=sample->length8;
loopSample[streamID]=write.val;
}
}
@ -848,8 +848,8 @@ SafeWriter* DivEngine::saveVGM(bool* sysToExport, bool loop) {
for (int i=0; i<song.sampleLen; i++) {
DivSample* sample=song.sample[i];
logI("setting seek to %d\n",sampleSeek);
sample->rendOffContiguous=sampleSeek;
sampleSeek+=sample->rendLength;
sample->off8=sampleSeek;
sampleSeek+=sample->length8;
}
if (writeDACSamples) for (int i=0; i<song.sampleLen; i++) {
@ -857,15 +857,9 @@ SafeWriter* DivEngine::saveVGM(bool* sysToExport, bool loop) {
w->writeC(0x67);
w->writeC(0x66);
w->writeC(0);
w->writeI(sample->rendLength);
if (sample->depth==8) {
for (unsigned int j=0; j<sample->rendLength; j++) {
w->writeC((unsigned char)sample->rendData[j]+0x80);
}
} else {
for (unsigned int j=0; j<sample->rendLength; j++) {
w->writeC(((unsigned short)sample->rendData[j]+0x8000)>>8);
}
w->writeI(sample->length8);
for (unsigned int j=0; j<sample->length8; j++) {
w->writeC((unsigned char)sample->data8[j]+0x80);
}
}
@ -874,15 +868,9 @@ SafeWriter* DivEngine::saveVGM(bool* sysToExport, bool loop) {
w->writeC(0x67);
w->writeC(0x66);
w->writeC(7);
w->writeI(sample->rendLength);
if (sample->depth==8) {
for (unsigned int j=0; j<sample->rendLength; j++) {
w->writeC(((unsigned char)sample->rendData[j]+0x80)>>1);
}
} else {
for (unsigned int j=0; j<sample->rendLength; j++) {
w->writeC(((unsigned short)sample->rendData[j]+0x8000)>>9);
}
w->writeI(sample->length8);
for (unsigned int j=0; j<sample->length8; j++) {
w->writeC(((unsigned char)sample->data8[j]+0x80)>>1);
}
}
@ -891,15 +879,9 @@ SafeWriter* DivEngine::saveVGM(bool* sysToExport, bool loop) {
w->writeC(0x67);
w->writeC(0x66);
w->writeC(5);
w->writeI(sample->rendLength);
if (sample->depth==8) {
for (unsigned int j=0; j<sample->rendLength; j++) {
w->writeC(((unsigned char)sample->rendData[j]+0x80)>>3);
}
} else {
for (unsigned int j=0; j<sample->rendLength; j++) {
w->writeC(((unsigned short)sample->rendData[j]+0x8000)>>11);
}
w->writeI(sample->length8);
for (unsigned int j=0; j<sample->length8; j++) {
w->writeC(((unsigned char)sample->data8[j]+0x80)>>3);
}
}
@ -909,47 +891,29 @@ SafeWriter* DivEngine::saveVGM(bool* sysToExport, bool loop) {
size_t memPos=0;
for (int i=0; i<song.sampleLen; i++) {
DivSample* sample=song.sample[i];
if ((memPos&0xff0000)!=((memPos+sample->rendLength)&0xff0000)) {
if ((memPos&0xff0000)!=((memPos+sample->length8)&0xff0000)) {
memPos=(memPos+0xffff)&0xff0000;
}
if (memPos>=16777216) break;
sample->rendOffP=memPos;
unsigned int alignedSize=(sample->rendLength+0xff)&(~0xff);
sample->offSegaPCM=memPos;
unsigned int alignedSize=(sample->length8+0xff)&(~0xff);
unsigned int readPos=0;
if (alignedSize>65536) alignedSize=65536;
if (sample->depth==8) {
for (unsigned int j=0; j<alignedSize; j++) {
if (readPos>=sample->rendLength) {
if (sample->loopStart>=0 && sample->loopStart<(int)sample->rendLength) {
readPos=sample->loopStart;
pcmMem[memPos++]=((unsigned char)sample->rendData[readPos]+0x80);
} else {
pcmMem[memPos++]=0x80;
}
for (unsigned int j=0; j<alignedSize; j++) {
if (readPos>=sample->length8) {
if (sample->loopStart>=0 && sample->loopStart<(int)sample->length8) {
readPos=sample->loopStart;
pcmMem[memPos++]=((unsigned char)sample->data8[readPos]+0x80);
} else {
pcmMem[memPos++]=((unsigned char)sample->rendData[readPos]+0x80);
pcmMem[memPos++]=0x80;
}
readPos++;
if (memPos>=16777216) break;
} else {
pcmMem[memPos++]=((unsigned char)sample->data8[readPos]+0x80);
}
sample->loopOffP=readPos-sample->loopStart;
} else {
for (unsigned int j=0; j<alignedSize; j++) {
if (readPos>=sample->rendLength) {
if (sample->loopStart>=0 && sample->loopStart<(int)sample->rendLength) {
readPos=sample->loopStart;
pcmMem[memPos++]=(((unsigned short)sample->rendData[readPos]+0x8000)>>8);
} else {
pcmMem[memPos++]=0x80;
}
} else {
pcmMem[memPos++]=(((unsigned short)sample->rendData[readPos]+0x8000)>>8);
}
readPos++;
if (memPos>=16777216) break;
}
sample->loopOffP=readPos-sample->loopStart;
readPos++;
if (memPos>=16777216) break;
}
sample->loopOffP=readPos-sample->loopStart;
if (memPos>=16777216) break;
}
@ -1137,12 +1101,12 @@ SafeWriter* DivEngine::saveVGM(bool* sysToExport, bool loop) {
if (loopSample[nextToTouch]<song.sampleLen) {
DivSample* sample=song.sample[loopSample[nextToTouch]];
// insert loop
if (sample->loopStart<(int)sample->rendLength) {
if (sample->loopStart<(int)sample->length8) {
w->writeC(0x93);
w->writeC(nextToTouch);
w->writeI(sample->rendOffContiguous+sample->loopStart);
w->writeI(sample->off8+sample->loopStart);
w->writeC(0x81);
w->writeI(sample->rendLength-sample->loopStart);
w->writeI(sample->length8-sample->loopStart);
}
}
loopSample[nextToTouch]=-1;

19
src/gui/gui.cpp
View file

@ -1266,7 +1266,8 @@ void FurnaceGUI::drawSampleEdit() {
} else {
DivSample* sample=e->song.sample[curSample];
ImGui::InputText("Name",&sample->name);
ImGui::Text("Length: %d",sample->length);
ImGui::Text("Length: %d",sample->samples);
ImGui::Text("Type: %d-bit",sample->depth);
if (ImGui::InputInt("Rate (Hz)",&sample->rate,10,200)) {
if (sample->rate<100) sample->rate=100;
if (sample->rate>96000) sample->rate=96000;
@ -1287,19 +1288,11 @@ void FurnaceGUI::drawSampleEdit() {
if (doLoop) {
ImGui::SameLine();
if (ImGui::InputInt("##LoopPosition",&sample->loopStart,1,10)) {
if (sample->loopStart<0 || sample->loopStart>=sample->length) {
if (sample->loopStart<0 || sample->loopStart>=(int)sample->samples) {
sample->loopStart=0;
}
}
}
if (ImGui::SliderScalar("Volume",ImGuiDataType_S8,&sample->vol,&_ZERO,&_ONE_HUNDRED,fmt::sprintf("%d%%%%",sample->vol*2).c_str())) {
if (sample->vol<0) sample->vol=0;
if (sample->vol>100) sample->vol=100;
}
if (ImGui::SliderScalar("Pitch",ImGuiDataType_S8,&sample->pitch,&_ZERO,&_TEN,pitchLabel[sample->pitch])) {
if (sample->pitch<0) sample->pitch=0;
if (sample->pitch>10) sample->pitch=10;
}
if (ImGui::Button("Apply")) {
e->renderSamplesP();
}
@ -1321,15 +1314,15 @@ void FurnaceGUI::drawSampleEdit() {
ImGui::Text("- sample loop start will be aligned to the nearest even sample on Amiga");
}
}
if (sample->length&1) {
if (sample->samples&1) {
considerations=true;
ImGui::Text("- sample length will be aligned to the nearest even sample on Amiga");
}
if (sample->length>65535) {
if (sample->samples>65535) {
considerations=true;
ImGui::Text("- maximum sample length on Sega PCM is 65536 samples");
}
if (sample->length>2097151) {
if (sample->samples>2097151) {
considerations=true;
ImGui::Text("- maximum sample length on Neo Geo ADPCM is 2097152 samples");
}